package classPractice;

public class DoubleTest {
    public static void main(String[] args) {
        Double dle = Double.valueOf(23.42); //装箱
        System.out.println(dle);
        double d2 = dle.doubleValue();
        System.out.println(d2);

        Double b3 = 23.12;
        double b4 = 23.12;
        System.out.println(b3+b4);
        System.out.println(b3.equals(b4));
    }
}
